Colossians is the seventh of Paul's Epistles. It was written around 61 AD, whilst Paul was imprisoned in Rome, to the Church in Colosse which is in modern day Turkey. Paul had never visited this church, but he knew its founder; a man named Epaphras. Paul had converted Epaphras when he spent three years in Ephesus. Epaphras went to Rome to see Paul and to raise his concerns about false ideas which are being taught in Colosse. On hearing the news Paul wrote this letter to the Colossians, warning them that what they were teaching was lessening the value of Christ. His letter gave them proper understanding of who Jesus was and what He did.
Colossians 3:15-17
"And let the peace of God rule in your hearts, to the which also ye are called in one body; and be ye thankful. Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord. And whatsoever ye do in word or deed, do all in the name of the Lord Jesus, giving thanks to God and the Father by him"